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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A304578 a(n) = (n^2 + 1) * 5^n + (n^2 + 2) * 3^n.

Table of values

n a(n)
0 3
1 19
2 179
3 1547
4 12083
5 87811
6 605827
7 4017787
8 25823651
9 161789939
10 992351123
11 5978820331
12 35477981011
13 207792160483
14 1203339605987
15 6900229858139
16 39226193944643
17 221290021193683
18 1239902910407539
19 6905023951693771
20 38243741775219827
21 210766657862250179
22 1156345359837548099

List of values

[3, 19, 179, 1547, 12083, 87811, 605827, 4017787, 25823651, 161789939, 992351123, 5978820331, 35477981011, 207792160483, 1203339605987, 6900229858139, 39226193944643, 221290021193683, 1239902910407539, 6905023951693771, 38243741775219827, 210766657862250179, 1156345359837548099]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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